Abstracts/Sleep Medicine 16 (2015) S2–S199
(p < 0.01). In 29 cases of PD sleep latency is above 30 mintues, and 36 PD patients have more than three times of the awakening index and cannot sleep again in 5 minutes. There were no big differences in the apnea–hypopnea index, ESS scores and the incidence of awakening early between patients with PD and controls. Comparing the sleep structure of two group, the ratio of slow wave became less, and REM latency period became longer in PD. Total sleeptime and sleep efficacy deteriorated in PD group; longer sleep latency period, increasing percentage of stage 1 sleep, and increasing number of arousal times, increasing number of PLMSI, decreasing part of REM sleep were found in PD group (p < 0.05). After comprehensive interference of PD, the score of ESS and PSQI became lower (p < 0.01). Conclusion: Sleep disturbance is common in PD, manifesting as difficulties in falling asleep, sleep fragment, RBD and PLMD, which is correlated with the severity of disease, cognition, depression, age and dopamine drugs. Given these reasons, corresponding interventions can overcome sleep disorders and improve life quality. http://dx.doi.org/10.1016/j.sleep.2015.02.1552
Genial tubercle: An anatomical analysis and the implications for genioglossus advancement S. Kim, K. Lee, J. Cho, S. Kim Department of Otorhinolaryngology – Head and Neck Surgery, School of Medicine, Kyung Hee University, Korea
Introduction: Genioglossus advancement (GA) is one of the popular procedures for the treatment of obstructive sleep apnea. The purposes of this study were to determine the exact positions and dimensions of the GT and mental foramen (MF), and to make a reference in designing a location of the osteotomy during GA. Materials and methods: Twenty four randomly selected adult cadavers with intact bony mandibular structures and precise measurements with a caliper to evaluate the dimensions of the GT and MF. Five variables were measured, including: (1) width of GT (GTW); (2) height of GT (GTH); (3) distance from inferior border of GT to inferior border of mandible (IGT-IBM); (4) distance from superior border of GT to inferior border of mandible (SGT-IBM); and (5) inter-mental foramen width (IMFW). In addition, the presence of AMF was analyzed. And possibility of proper osteotomy was evaluated when the osteotomy was performed in outer table of mandible at 2 mm higher than the estimation of inner table. Results: The measurements were GTW 7.90 ± 1.44 (3.0–8.0) mm, GTH 7.3 ± 1.45 (5.0–10.0) mm, IGT-IBM 8.46 ± 1.93 (5.0–11.0) mm, SGT-IBM 15.85 ± 2.30 (14.5–20.0) mm and IMFW 56.38 ± 4.75 (43.0– 60.0) mm. AMF were observed in only one patient. Among 24 cadavers, 23 cases showed proper osteotomy when the osteotomy was 2 mm higher than the estimation of inner table. Conclusion: According to our results, proper osteotomy which includes genial tubercle may be possible when the osteotomy was 2 mm higher than the estimation of inner table in most patients. http://dx.doi.org/10.1016/j.sleep.2015.02.1553
Nocturnal text messaging patterns on sleep health in adolescents K. Grover 1, M. Malkowski 2, L. Kang 3, S. Machado 4, R. Lulla 5, D. Heisey 6, X. Ming 1 1 New Jersey Medical School, Rutgers University, USA 2 Union City High School, USA 3 Communications High School, USA
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Emerson Junior/Senior High School, USA New York University, USA 6 Scotch Plains-Fanwood High School, USA 5
Introduction: There is growing body of evidence on the negative effects of electronic usage on sleeping patterns that may compromise sleep quality and school performance in adolescents. We aimed to determine whether an association exists between nocturnal messaging, a constellation of daytime sluggishness symptoms and reported school performance. Materials and methods: Two thousand one hundred thirtynine students from three high schools in New Jersey completed anonymous questionnaires assessing sleep schedules; sleep duration; daytime sluggishness symptoms (naps, perception of inadequate sleep, daytime sleepiness); nocturnal text messaging habits; and self-reported academic performance. Logistic regression and odds ratios were applied for statistical analysis. Results: Of the 1841 students reporting messaging, 94.7% messaged prior to lights out, 80.1% messaged after lights out, while 74.1% messaged both prior to and after lights out. 19.4% messaged only before midnight, 5.0% messaged only after midnight, and 27.6% messaged on both timing. Students messaging for various duration prior to lights out or after lights out were more likely to report DSS (p values 0.089 to < 0.0001), with the exception of messaging for less than 30 minutes prior to lights out. Students messaging both before and after midnight were more likely to feel DSS (OR: 2.193, p < 0.002) than students messaging only before midnight. Non-messaging students were less likely (OR: 0.494, p = 0.01) to experience daytime sluggishness symptoms than students messaging for any duration. Students messaging both before and after midnight were less likely (OR: 0.393, p < 0.0001) to report good grades compared with students messaging only before midnight. Conclusion: Our results showed that excessive late night messaging negatively affected the daytime alertness of students in this cohort and contributed to poorer academic performance in students messaging both before and after midnight. Acknowledgements: The authors would like to thank all the high school students, the teachers and administrators for their participation. http://dx.doi.org/10.1016/j.sleep.2015.02.1554
Developing sleep services for Singaporean children and adolescents I. Munt Institute of Mental Health, Singapore
Introduction: A 2006 survey of Singaporean parents found that over 60% of presentations to a child and adolescent psychiatry clinic also had a significant sleep problem [1]. This paper outlines the steps undertaken to develop sleep services so as to better support these children and adolescents. Materials and methods: (1) Survey of staff to ascertain (a) if they felt sleep problems were a significant concern and if so (b) what were the common problems they saw and (c) what support would they like. (2) Literature review: To search for appropriate information on assessment and management of sleep disorders with particular reference to Asian populations. (3) Collation and distribution of suitable Internet/printed resources for assessment/ management of sleep problems plus patient education materials. (4) Liaison with existing local sleep services. (5) Attendance at educational courses. (6) Development of clinic to see children and adolescents with significant sleep disturbance.